* An even number in the minor version (second component) indicates a production-ready stable release such as 2.24.0, which would have been 2.0.24 under the old system.
* The patchlevel (micro version, third component) indicates a bugfix-only update: for example, 2.24.1 would be a bugfix-only release to fix bugs in 2.24.0, without adding new features.
* An odd number in the minor version indicates a prerelease such as 2.23.0. Stable distributions should not use these prereleases.
* The patchlevel indicates successive prereleases, for example 2.23.1 and 2.23.2 would be prereleases during development of the SDL 2.24.0 stable release.
* Added the hint SDL_HINT_MOUSE_RELATIVE_WARP_MOTION to control whether mouse warping generates motion events in relative mode. This hint defaults off.
* Added the hint SDL_HINT_TRACKPAD_IS_TOUCH_ONLY to control whether trackpads are treated as touch devices or mice. By default touchpads are treated as mouse input.
* Added the hint SDL_HINT_JOYSTICK_HIDAPI_COMBINE_JOY_CONS to control whether Joy-Con controllers are automatically merged into a unified gamepad when using the HIDAPI driver. This hint defaults on.
* The hint SDL_HINT_JOYSTICK_HIDAPI_SWITCH_HOME_LED can be set to a floating point value to set the brightness of the Home LED on Nintendo Switch controllers
* Added the hint SDL_HINT_JOYSTICK_HIDAPI_JOYCON_HOME_LED to set the Home LED brightness for the Nintendo Joy-Con controllers. By default the Home LED is not modified.
* Added the hint SDL_HINT_JOYSTICK_HIDAPI_SWITCH_PLAYER_LED to control whether the player LED should be lit on the Nintendo Joy-Con controllers
* Added SDL_GameControllerGetFirmwareVersion() and SDL_JoystickGetFirmwareVersion(), currently implemented for DualSense(tm) Wireless Controllers using HIDAPI
* Added SDL_JoystickAttachVirtualEx() for extended virtual controller support
* Added SDL_GetDefaultAudioInfo() to get the name and format of the default audio device, currently implemented for PipeWire, PulseAudio, WASAPI, and DirectSound
* Added the hint SDL_HINT_WINDOWS_DPI_AWARENESS to set whether the application is DPI-aware. This hint must be set before initializing the video subsystem
* Added the hint SDL_HINT_WINDOWS_DPI_SCALING to control whether the SDL coordinates are in DPI-scaled points or pixels
* Added the hint SDL_HINT_VIDEO_WAYLAND_MODE_EMULATION to control whether to expose a set of emulated modes in addition to the native resolution modes available on Wayland
* Added SDL_GL_FLOATBUFFERS to allow Cocoa GL contexts to use EDR
* Added the hint SDL_HINT_MAC_OPENGL_ASYNC_DISPATCH to control whether dispatching OpenGL context updates should block the dispatching thread until the main thread finishes processing. This hint defaults to blocking, which is the safer option on modern macOS.
* Added SDL_IsTextInputShown() which returns whether the IME window is currently shown
* Added SDL_ClearComposition() to dismiss the composition window without disabling IME input
* Added SDL_TEXTEDITING_EXT event for handling long composition text, and a hint SDL_HINT_IME_SUPPORT_EXTENDED_TEXT to enable it
* Added the hint SDL_HINT_MOUSE_RELATIVE_MODE_CENTER to control whether the mouse should be constrained to the whole window or the center of the window when relative mode is enabled
* The mouse is now automatically captured when mouse buttons are pressed, and the hint SDL_HINT_MOUSE_AUTO_CAPTURE allows you to control this behavior
* Added the hint SDL_HINT_VIDEO_FOREIGN_WINDOW_OPENGL to let SDL know that a foreign window will be used with OpenGL
* Added the hint SDL_HINT_VIDEO_FOREIGN_WINDOW_VULKAN to let SDL know that a foreign window will be used with Vulkan
* Added the hint SDL_HINT_QUIT_ON_LAST_WINDOW_CLOSE to specify whether an SDL_QUIT event will be delivered when the last application window is closed
* SDL_RenderGeometryRaw() takes a pointer to SDL_Color, not int. You can cast color data in SDL_PIXELFORMAT_RGBA32 format (SDL_PIXELFORMAT_ABGR8888 on little endian systems) for this parameter.
* Improved accuracy of horizontal and vertical line drawing when using OpenGL or OpenGLES
* Steam Controller support is disabled by default, and can be enabled by setting the hint SDL_HINT_JOYSTICK_HIDAPI_STEAM to "1" before calling SDL_Init()
* Added documentation that the UIApplicationSupportsIndirectInputEvents key must be set to true in your application's Info.plist in order to get real Bluetooth mouse events.
* Steam Controller support is disabled by default, and can be enabled by setting the hint SDL_HINT_JOYSTICK_HIDAPI_STEAM to "1" before calling SDL_Init()
* Added clearer names for RGB pixel formats, e.g. SDL_PIXELFORMAT_XRGB8888, SDL_PIXELFORMAT_XBGR8888, etc.
Windows:
* Added the RAWINPUT controller driver to support more than 4 Xbox controllers simultaneously
* Added the hint SDL_HINT_JOYSTICK_RAWINPUT to control whether the RAWINPUT driver should be used
* Added the hint SDL_HINT_JOYSTICK_HIDAPI_CORRELATE_XINPUT to control whether XInput and WGI should be used to for complete controller functionality with the RAWINPUT driver.
macOS:
* Added the SDL_WINDOW_METAL flag to specify that a window should be created with a Metal view
* Added SDL_Metal_GetLayer() to get the CAMetalLayer backing a Metal view
* Added SDL_Metal_GetDrawableSize() to get the size of a window's drawable, in pixels
Linux:
* Added the hint SDL_HINT_AUDIO_DEVICE_APP_NAME to specify the name that shows up in PulseAudio for your application
* Added the hint SDL_HINT_AUDIO_DEVICE_STREAM_NAME to specify the name that shows up in PulseAudio associated with your audio stream
* Added the hint SDL_HINT_LINUX_JOYSTICK_DEADZONES to control whether HID defined dead zones should be respected on Linux
* Added the hint SDL_HINT_THREAD_PRIORITY_POLICY to specify the thread scheduler policy
* Added the hint SDL_HINT_THREAD_FORCE_REALTIME_TIME_CRITICAL to allow time critical threads to use a realtime scheduling policy
Android:
* Added SDL_AndroidRequestPermission() to request a specific system permission
* Added the hint SDL_HINT_ANDROID_BLOCK_ON_PAUSE_PAUSEAUDIO to control whether audio will pause when the application goes intot he background
OS/2:
* Added support for OS/2, see docs/README-os2.md for details
Emscripten (running in a web browser):
* Added the hint SDL_HINT_EMSCRIPTEN_ASYNCIFY to control whether SDL should call emscripten_sleep internally
* Added new blend mode, SDL_BLENDMODE_MUL, which does a modulate and blend operation
* Added the hint SDL_HINT_DISPLAY_USABLE_BOUNDS to override the results of SDL_GetDisplayUsableBounds() for display index 0.
* Added the window underneath the finger to the SDL_TouchFingerEvent
* Added SDL_GameControllerTypeForIndex(), SDL_GameControllerGetType() to return the type of a game controller (Xbox 360, Xbox One, PS3, PS4, or Nintendo Switch Pro)
* Added the hint SDL_HINT_GAMECONTROLLERTYPE to override the automatic game controller type detection
* Added SDL_JoystickFromPlayerIndex() and SDL_GameControllerFromPlayerIndex() to get the device associated with a player index
* Added SDL_JoystickSetPlayerIndex() and SDL_GameControllerSetPlayerIndex() to set the player index associated with a device
* Added the hint SDL_HINT_GAMECONTROLLER_USE_BUTTON_LABELS to specify whether Nintendo Switch Pro controllers should use the buttons as labeled or swapped to match positional layout. The default is to use the buttons as labeled.
* Added support for Nintendo GameCube controllers to the HIDAPI driver, and a hint SDL_HINT_JOYSTICK_HIDAPI_GAMECUBE to control whether this is used.
* Improved support for Xbox 360 and Xbox One controllers when using the HIDAPI driver
* Added support for many game controllers, including:
* 8BitDo FC30 Pro
* 8BitDo M30 GamePad
* BDA PS4 Fightpad
* HORI Fighting Commander
* Hyperkin Duke
* Hyperkin X91
* MOGA XP5-A Plus
* NACON GC-400ES
* NVIDIA Controller v01.04
* PDP Versus Fighting Pad
* Razer Raion Fightpad for PS4
* Razer Serval
* Stadia Controller
* SteelSeries Stratus Duo
* Victrix Pro Fight Stick for PS4
* Xbox One Elite Series 2
* Fixed blocking game controller rumble calls when using the HIDAPI driver
* Added SDL_zeroa() macro to zero an array of elements
* Added SDL_HasARMSIMD() which returns true if the CPU has ARM SIMD (ARMv6+) features
Windows:
* Fixed crash when using the release SDL DLL with applications built with gcc
* Fixed performance regression in event handling introduced in 2.0.10
* Added support for SDL_SetThreadPriority() for UWP applications
Linux:
* Added the hint SDL_HINT_VIDEO_X11_WINDOW_VISUALID to specify the visual chosen for new X11 windows
* Added the hint SDL_HINT_VIDEO_X11_FORCE_EGL to specify whether X11 should use GLX or EGL by default
iOS / tvOS / macOS:
* Added SDL_Metal_CreateView() and SDL_Metal_DestroyView() to create CAMetalLayer-backed NSView/UIView and attach it to the specified window.
iOS/ tvOS:
* Added support for Bluetooth Steam Controllers as game controllers
tvOS:
* Fixed support for surround sound on Apple TV
Android:
* Added SDL_GetAndroidSDKVersion() to return the API level of the current device
* Added support for audio capture using OpenSL-ES
* Added support for Bluetooth Steam Controllers as game controllers
* Fixed rare crashes when the app goes into the background or terminates
* Added the hint SDL_HINT_RENDER_BATCHING to control whether batching should be used for the rendering API. This defaults to "1" if you don't specify what rendering driver to use when creating the renderer.
* Added the hint SDL_HINT_EVENT_LOGGING to enable logging of SDL events for debugging purposes
* Added the hint SDL_HINT_GAMECONTROLLERCONFIG_FILE to specify a file that will be loaded at joystick initialization with game controller bindings
* Added a new sensor API, initialized by passing SDL_INIT_SENSOR to SDL_Init(), and defined in SDL_sensor.h
* Added an event SDL_SENSORUPDATE which is sent when a sensor is updated
* Added SDL_GetDisplayOrientation() to return the current display orientation
* Added an event SDL_DISPLAYEVENT which is sent when the display orientation changes
* Added HIDAPI joystick drivers for more consistent support for Xbox, PS4 and Nintendo Switch Pro controller support across platforms. (Thanks to Valve for contributing the PS4 and Nintendo Switch Pro controller support)
* Added support for many other popular game controllers
* Added SDL_JoystickGetDevicePlayerIndex(), SDL_JoystickGetPlayerIndex(), and SDL_GameControllerGetPlayerIndex() to get the player index for a controller. For XInput controllers this returns the XInput index for the controller.
* Added the hint SDL_HINT_MOUSE_DOUBLE_CLICK_TIME to control the mouse double-click time
* Added the hint SDL_HINT_MOUSE_DOUBLE_CLICK_RADIUS to control the mouse double-click radius, in pixels
* Added SDL_HasColorKey() to return whether a surface has a colorkey active
* Added SDL_HasAVX512F() to return whether the CPU has AVX-512F features
* Added SDL_IsTablet() to return whether the application is running on a tablet
* Added SDL_THREAD_PRIORITY_TIME_CRITICAL for threads that must run at the highest priority
Mac OS X:
* Fixed black screen at start on Mac OS X Mojave
Linux:
* Added SDL_LinuxSetThreadPriority() to allow adjusting the thread priority of native threads using RealtimeKit if available.
iOS:
* Fixed Asian IME input
Android:
* Updated required Android SDK to API 26, to match Google's new App Store requirements
* Added support for wired USB Xbox, PS4, and Nintendo Switch Pro controllers
* Added support for relative mouse mode on Android 7.0 and newer (except where it's broken, on Chromebooks and when in DeX mode with Samsung Experience 9.0)
* Added support for custom mouse cursors on Android 7.0 and newer
* Added the hint SDL_HINT_ANDROID_TRAP_BACK_BUTTON to control whether the back button will back out of the app (the default) or be passed to the application as SDL_SCANCODE_AC_BACK
* Added SDL_AndroidBackButton() to trigger the Android system back button behavior when handling the back button in the application
* Added SDL_IsChromebook() to return whether the app is running in the Chromebook Android runtime
* Added SDL_IsDeXMode() to return whether the app is running while docked in the Samsung DeX
* Added SDL_SetYUVConversionMode() and SDL_GetYUVConversionMode() to control the formula used when converting to and from YUV colorspace. The options are JPEG, BT.601, and BT.709
* Added SDL_RenderGetMetalLayer() and SDL_RenderGetMetalCommandEncoder() to insert your own drawing into SDL rendering when using the Metal implementation
* Added the hint SDL_HINT_IOS_HIDE_HOME_INDICATOR to control whether the home indicator bar on iPhone X should be hidden. This defaults to dimming the indicator for fullscreen applications and showing the indicator for windowed applications.
iOS / Android:
* Added the hint SDL_HINT_RETURN_KEY_HIDES_IME to control whether the return key on the software keyboard should hide the keyboard or send a key event (the default)
* Added the hint SDL_HINT_TV_REMOTE_AS_JOYSTICK to control whether TV remotes should be listed as joystick devices (the default) or send keyboard events.
Linux:
* Added the hint SDL_HINT_VIDEO_X11_NET_WM_BYPASS_COMPOSITOR to control whether the X server should skip the compositor for the SDL application. This defaults to "1"
* Added the hint SDL_HINT_VIDEO_DOUBLE_BUFFER to control whether the Raspberry Pi and KMSDRM video drivers should use double or triple buffering (the default)
* Implemented non-power-of-two audio resampling, optionally using libsamplerate to perform the resampling
* Added the hint SDL_HINT_AUDIO_RESAMPLING_MODE to control the quality of resampling
* Added the hint SDL_HINT_RENDER_LOGICAL_SIZE_MODE to control the scaling policy for SDL_RenderSetLogicalSize():
"0" or "letterbox" - Uses letterbox/sidebars to fit the entire rendering on screen (the default)
"1" or "overscan" - Will zoom the rendering so it fills the entire screen, allowing edges to be drawn offscreen
* Added the hints SDL_HINT_MOUSE_NORMAL_SPEED_SCALE and SDL_HINT_MOUSE_RELATIVE_SPEED_SCALE to scale the mouse speed when being read from raw mouse input
* Added the hint SDL_HINT_TOUCH_MOUSE_EVENTS to control whether SDL will synthesize mouse events from touch events
* Implemented audio capture support for some platforms
* Added SDL_DequeueAudio() to retrieve audio when buffer queuing is turned on for audio capture
* Added events for dragging and dropping text
* Added events for dragging and dropping multiple items
* By default the click raising a window will not be delivered to the SDL application. You can set the hint SDL_HINT_MOUSE_FOCUS_CLICKTHROUGH to "1" to allow that click through to the window.
* Saving a surface with an alpha channel as a BMP will use a newer BMP format that supports alpha information. You can set the hint SDL_HINT_BMP_SAVE_LEGACY_FORMAT to "1" to use the old format.
* Added SDL_GetHintBoolean() to get the boolean value of a hint
* Added SDL_RenderSetIntegerScale() to set whether to smoothly scale or use integral multiples of the viewport size when scaling the rendering output
* Added SDL_CreateRGBSurfaceWithFormat() and SDL_CreateRGBSurfaceWithFormatFrom() to create an SDL surface with a specific pixel format
* Added SDL_GetDisplayUsableBounds() which returns the area usable for windows. For example, on Mac OS X, this subtracts the area occupied by the menu bar and dock.
* Added SDL_GetWindowBordersSize() which returns the size of the window's borders around the client area
* Added a window event SDL_WINDOWEVENT_HIT_TEST when a window had a hit test that wasn't SDL_HITTEST_NORMAL (e.g. in the title bar or window frame)
* Added SDL_SetWindowResizable() to change whether a window is resizable
* Added SDL_SetWindowOpacity() and SDL_GetWindowOpacity() to affect the window transparency
* Added SDL_SetWindowModalFor() to set a window as modal for another window
* Added support for AUDIO_U16LSB and AUDIO_U16MSB to SDL_MixAudioFormat()
* Fixed flipped images when reading back from target textures when using the OpenGL renderer
* Fixed texture color modulation with SDL_BLENDMODE_NONE when using the OpenGL renderer
* Fixed bug where the alpha value of colorkeys was ignored when blitting in some cases
Windows:
* Added a hint SDL_HINT_WINDOWS_DISABLE_THREAD_NAMING to prevent SDL from raising a debugger exception to name threads. This exception can cause problems with .NET applications when running under a debugger.
* The hint SDL_HINT_THREAD_STACK_SIZE is now supported on Windows
* Fixed XBox controller triggers automatically being pulled at startup
* The first icon from the executable is used as the default window icon at runtime
* Fixed SDL log messages being printed twice if SDL was built with C library support
* Reset dead keys when the SDL window loses focus, so dead keys pressed in SDL applications don't affect text input into other applications.
Mac OS X:
* Fixed selecting the dummy video driver
* The caps lock key now generates a pressed event when pressed and a released event when released, instead of a press/release event pair when pressed.
* Fixed mouse wheel events on Mac OS X 10.12
* The audio driver has been updated to use AVFoundation for better compatibility with newer versions of Mac OS X
Linux:
* Added support for the Fcitx IME
* Added a window event SDL_WINDOWEVENT_TAKE_FOCUS when a window manager asks the SDL window whether it wants to take focus.
* Refresh rates are now rounded instead of truncated, e.g. 59.94 Hz is rounded up to 60 Hz instead of 59.
* Added initial support for touchscreens on Raspberry Pi
* Added support for dynamically loaded objects on iOS 8 and newer
tvOS:
* Added support for Apple TV
* Added a hint SDL_HINT_APPLE_TV_REMOTE_ALLOW_ROTATION to control whether he Apple TV remote's joystick axes will automatically match the rotation of the remote.
Android:
* Fixed SDL not resizing window when Android screen resolution changes
* Corrected the joystick Z axis reporting for the accelerometer
* Added SDL_HasAVX2() to detect CPUs with AVX2 support
* Added SDL_SetWindowHitTest() to let apps treat parts of their SDL window like traditional window decorations (drag areas, resize areas)
* Added SDL_GetGrabbedWindow() to get the window that currently has input grab, if any
* Added SDL_RenderIsClipEnabled() to tell whether clipping is currently enabled in a renderer
* Added SDL_CaptureMouse() to capture the mouse to get events while the mouse is not in your window
* Added SDL_WarpMouseGlobal() to warp the mouse cursor in global screen space
* Added SDL_GetGlobalMouseState() to get the current mouse state outside of an SDL window
* Added a direction field to mouse wheel events to tell whether they are flipped (natural) or not
* Added GL_CONTEXT_RELEASE_BEHAVIOR GL attribute (maps to [WGL|GLX]_ARB_context_flush_control extension)
* Added EGL_KHR_create_context support to allow OpenGL ES version selection on some platforms
* Added NV12 and NV21 YUV texture support for OpenGL and OpenGL ES 2.0 renderers
* Added a Vivante video driver that is used on various SoC platforms
* Added an event SDL_RENDER_DEVICE_RESET that is sent from the D3D renderers when the D3D device is lost, and from Android's event loop when the GLES context had to be recreated
* Added a hint SDL_HINT_NO_SIGNAL_HANDLERS to disable SDL's built in signal handling
* Added a hint SDL_HINT_THREAD_STACK_SIZE to set the stack size of SDL's threads
* Added SDL_sqrtf(), SDL_tan(), and SDL_tanf() to the stdlib routines
* Improved support for WAV and BMP files with unusual chunks in them
* Renamed SDL_assert_data to SDL_AssertData and SDL_assert_state to SDL_AssertState
* The SDL_WINDOW_ALLOW_HIGHDPI window flag now enables high-dpi support, and SDL_GL_GetDrawableSize() or SDL_GetRendererOutputSize() gets the window resolution in pixels
* SDL_GetWindowSize() and display mode sizes are in the "DPI-independent points" / "screen coordinates" coordinate space rather than pixels (matches OS X behavior)
* Added native resolution support for the iPhone 6 Plus
* Added game controller mappings for the PS4 and OUYA controllers
* Added SDL_GetDefaultAssertionHandler() and SDL_GetAssertionHandler()
* Added SDL_DetachThread()
* Added SDL_HasAVX() to determine if the CPU has AVX features
* Added SDL_vsscanf(), SDL_acos(), and SDL_asin() to the stdlib routines
* EGL can now create/manage OpenGL and OpenGL ES 1.x/2.x contexts, and share
them using SDL_GL_SHARE_WITH_CURRENT_CONTEXT
* Added a field "clicks" to the mouse button event which records whether the event is a single click, double click, etc.
* The screensaver is now disabled by default, and there is a hint SDL_HINT_VIDEO_ALLOW_SCREENSAVER that can change that behavior.
* Added a hint SDL_HINT_MOUSE_RELATIVE_MODE_WARP to specify whether mouse relative mode should be emulated using mouse warping.
* testgl2 does not need to link with libGL anymore
* Added testgles2 test program to demonstrate working with OpenGL ES 2.0
* Added controllermap test program to visually map a game controller
Windows:
* Support for OpenGL ES 2.x contexts using either WGL or EGL (natively via
the driver or emulated through ANGLE)
* Added a hint SDL_HINT_VIDEO_WIN_D3DCOMPILER to specify which D3D shader compiler to use for OpenGL ES 2 support through ANGLE
* Added a hint SDL_HINT_VIDEO_WINDOW_SHARE_PIXEL_FORMAT that is useful when creating multiple windows that should share the same OpenGL context.
* Added an event SDL_RENDER_TARGETS_RESET that is sent when D3D9 render targets are reset after the device has been restored.
Mac OS X:
* Added a hint SDL_HINT_MAC_CTRL_CLICK_EMULATE_RIGHT_CLICK to control whether Ctrl+click should be treated as a right click on Mac OS X. This is off by default.
Linux:
* Fixed fullscreen and focused behavior when receiving NotifyGrab events
* Added experimental Wayland and Mir support, disabled by default
Android:
* Joystick support (minimum SDK version required to build SDL is now 12,
the required runtime version remains at 10, but on such devices joystick
support won't be available).
* Hotplugging support for joysticks
* Added a hint SDL_HINT_ACCELEROMETER_AS_JOYSTICK to control whether the accelerometer should be listed as a 3 axis joystick, which it will by default.
* Created a static library configuration for the Visual Studio 2010 project
* Added a hint to create the Direct3D device with support for multi-threading:
SDL_HINT_RENDER_DIRECT3D_THREADSAFE
* Added a function to get the D3D9 adapter index for a display:
SDL_Direct3D9GetAdapterIndex()
* Added a function to get the D3D9 device for a D3D9 renderer:
SDL_RenderGetD3D9Device()
* Fixed building SDL with the mingw32 toolchain (mingw-w64 is preferred)
* Fixed crash when using two XInput controllers at the same time
* Fixed detecting a mixture of XInput and DirectInput controllers
* Fixed clearing a D3D render target larger than the window
* Improved support for format specifiers in SDL_snprintf()
Mac OS X:
* Added support for retina displays:
Create your window with the SDL_WINDOW_ALLOW_HIGHDPI flag, and then use SDL_GL_GetDrawableSize() to find the actual drawable size. You are responsible for scaling mouse and drawing coordinates appropriately.
* Fixed mouse warping in fullscreen mode
* Right mouse click is emulated by holding the Ctrl key while left clicking
Linux:
* Fixed float audio support with the PulseAudio driver
* Fixed missing line endpoints in the OpenGL renderer on some drivers
* X11 symbols are no longer defined to avoid collisions when linking statically
iOS:
* Fixed status bar visibility on iOS 7
* Flipped the accelerometer Y axis to match expected values
Android:
IMPORTANT: You MUST get the updated SDLActivity.java to match C code
* Moved EGL initialization to native code
* Fixed the accelerometer axis rotation relative to the device rotation
* Fixed race conditions when handling the EGL context on pause/resume
* Touch devices are available for enumeration immediately after init
Raspberry Pi:
* Added support for the Raspberry Pi, see README-raspberrypi.txt for details
